US7161779B2 - Anti-pinch and electrical motor protection device - Google Patents
Anti-pinch and electrical motor protection device Download PDFInfo
- Publication number
- US7161779B2 US7161779B2 US10/735,361 US73536103A US7161779B2 US 7161779 B2 US7161779 B2 US 7161779B2 US 73536103 A US73536103 A US 73536103A US 7161779 B2 US7161779 B2 US 7161779B2
- Authority
- US
- United States
- Prior art keywords
- temperature coefficient
- coefficient circuit
- positive temperature
- circuit protector
- predetermined temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related, expires
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
- H02H9/026—Current limitation using PTC resistors, i.e. resistors with a large positive temperature coefficient
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/085—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load
- H02H7/0851—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load for motors actuating a movable member between two end positions, e.g. detecting an end position or obstruction by overload signal
Definitions
- This invention relates to an anti-pinch and motor protection device. More specifically, the invention relates to a positive temperature coefficient circuit protector device for use in a motor drive circuit.
- motor driven devices such as in windows and seat positioning
- these and other motor driven devices like them have been known to become dangerous for users if a body part or some other article gets caught while the motor is activating movement. While an object is caught, there can be a lot of stress on the motors and they may burn out if they become too hot or even just shut off. If this happens, the body part or article caught is still pinched and cannot be released until the motor cools and is reset. This can result in serious damage or injury.
- This invention relates to an anti-pinch and electrical motor protection device comprising at least one PTC circuit protector, and a diode.
- This invention will preferably have two PTC circuit protectors comprising one PTC circuit protector tuned to a low temperature and one PTC circuit protector tuned to a high temperature.
- the motor will tend to overheat.
- the PTC circuit protector tuned to a low temperature, the PTC circuit protector is tripped and the electrical current is stopped.
- the tripped PTC circuit protector may be bypassed in an opposite direction through the diode, which allows for the reversal of the direction of the motor thereby releasing the pinched object and extends the life of the motor.
- FIG. 1 is a perspective view of the positive temperature coefficient circuit protector device of the present invention
- FIG. 2A is a perspective view of the positive temperature coefficient circuit protector device of the present invention in normal mode
- FIG. 2B is a perspective view of the positive temperature coefficient circuit protector device of the present invention indicating a break in the first current flow when the first temperature threshold is exceeded;
- FIG. 2C is a perspective view of the positive temperature coefficient circuit protector device of the present invention indicating the second current flow in the second direction when the first temperature threshold is exceeded;
- FIG. 3 is a schematic view of the positive temperature coefficient circuit protector device of the present invention indicating the possible paths of current flow
- FIG. 4 is a schematic diagram of the positive temperature coefficient circuit protector device of the present invention.
- FIG. 5 is a graph of system resistance through the positive temperature coefficient circuit protector device of the present invention versus temperature.
- FIG. 2A shows the current flow through positive temperature coefficient (herein after referred to as PTC) circuit protector device of the present invention in its normal mode.
- PTC positive temperature coefficient
- the tuned temperature of the PTC circuit protector tuned to a lower temperature 8 can be any appropriate temperature as long as there is a difference between the temperature of the PTC circuit protector tuned to a lower temperature 8 and the PTC circuit protector tuned to a higher temperature 10 .
- the electrical current has no problem traveling across the PTC circuit protectors 8 and 10 .
- there is high stress on the motor, shown as M in FIG. 4 running that window, seat, or roof. That stress can result in the motor M malfunctioning or even ceasing to function. That can cause severe damage to the motor M and delay getting an object out of its pinched position, resulting in damage or injury.
- the motor driven device pinches something within it, the motor M stalls and begins to draw higher current, which overheats the circuit above the first, or lower temperature to which that the PTC circuit protector 8 is tuned, so that the circuit is tripped, as indicated in FIG. 2B .
- the tripping of the circuit is caused by a logarithmic increase in the resistance of the PTC circuit protector tuned to a first, lower temperature 8 as its tuned temperature is reached. This extreme increase in resistance reduces the current flow to a trickle, effectively stopping the motor M and avoiding damage or injury.
- a diode 12 is electrically connected in parallel with the PTC circuit protector tuned to a first, lower temperature 8 .
- the diode 12 is oriented so that the current flow 14 can be reversed, as shown in FIGS. 2C and 3 , and flow through the diode 12 around the tripped PTC circuit protector tuned to a first, lower temperature 8 , and through the PTC circuit protector tuned to a second, higher temperature 10 to drive the motor M in the opposite direction.
- the PTC circuit protector tuned to a second, higher temperature 10 continues to protect the motor M in the opposite direction if a problem continues to exist that would cause further overheating of the circuit.
- This invention is very important to any DC driven motors within a motor vehicle because of not only is safety and motor protection features, but also because it is a very easy way to keep down costs of a motor vehicle.
- This invention is a simplified way of meeting consumer demands for safety and meeting manufacturer's demands for motor protection without using costly software.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Protection Of Generators And Motors (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
Description
Claims (11)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/735,361 US7161779B2 (en) | 2003-12-12 | 2003-12-12 | Anti-pinch and electrical motor protection device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/735,361 US7161779B2 (en) | 2003-12-12 | 2003-12-12 | Anti-pinch and electrical motor protection device |
Publications (2)
Publication Number | Publication Date |
---|---|
US20050128660A1 US20050128660A1 (en) | 2005-06-16 |
US7161779B2 true US7161779B2 (en) | 2007-01-09 |
Family
ID=34653599
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/735,361 Expired - Fee Related US7161779B2 (en) | 2003-12-12 | 2003-12-12 | Anti-pinch and electrical motor protection device |
Country Status (1)
Country | Link |
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US (1) | US7161779B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100039057A1 (en) * | 2008-04-30 | 2010-02-18 | Tsai Kune-Muh | Anti-pinch method and device for controlling an openable and closable body |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DK1967831T3 (en) * | 2007-03-07 | 2012-07-30 | Kriwan Ind Elektronik Gmbh | A temperature tripping device |
KR101592574B1 (en) * | 2009-03-20 | 2016-02-05 | 엘지전자 주식회사 | A refrigerator for controlling refrigerator |
KR101592572B1 (en) * | 2009-03-20 | 2016-02-05 | 엘지전자 주식회사 | A refrigerator for controlling refrigerator |
KR101592573B1 (en) * | 2009-03-20 | 2016-02-05 | 엘지전자 주식회사 | A refrigerator |
KR101592571B1 (en) * | 2009-03-20 | 2016-02-05 | 엘지전자 주식회사 | A refrigerator for controlling refrigerator |
KR101592575B1 (en) * | 2009-03-20 | 2016-02-05 | 엘지전자 주식회사 | Refrigerator |
CN112211520B (en) * | 2019-07-10 | 2021-10-15 | 北京经纬恒润科技股份有限公司 | Anti-pinch detection method and system |
Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3673538A (en) * | 1969-12-05 | 1972-06-27 | Texas Instruments Inc | Composite thermistor temperature sensor having step-function response |
US5153805A (en) * | 1988-06-06 | 1992-10-06 | Thermo-O-Disc, Incorporated | Temperature-compensated thermal protector |
US5394288A (en) * | 1991-12-20 | 1995-02-28 | Jeco Company Limited | Actuator |
US20010048280A1 (en) | 2000-01-04 | 2001-12-06 | Wilson Robert H. | Motor control system for an automatic window of a vehicle |
US6404158B1 (en) | 1992-04-22 | 2002-06-11 | Nartron Corporation | Collision monitoring system |
US20020101210A1 (en) | 1992-04-22 | 2002-08-01 | Nartron Corporation | Collision monitoring system |
US20020143452A1 (en) | 2001-03-30 | 2002-10-03 | Siemens Vdo Automotive Corporation | Automated closure system and method |
US6462643B1 (en) * | 1998-02-16 | 2002-10-08 | Matsushita Electric Industrial Co., Ltd. | PTC thermistor element and method for producing the same |
US20020190680A1 (en) | 2001-06-18 | 2002-12-19 | Gerbetz Robert P. | Method of compensating for abrupt load changes in an anti-pinch window control system |
US20020190677A1 (en) | 2001-05-25 | 2002-12-19 | Robert Gerbetz | Method for closing a motor driven window |
US20030137265A1 (en) | 2002-01-21 | 2003-07-24 | International Rectifier Corp. | Anti-pinch window drive circuit |
US20030151382A1 (en) | 2000-08-03 | 2003-08-14 | Daniels Andrew R | Vehicle closure anti-pinch assembly having a non-contact sensor |
US20040114286A1 (en) * | 2002-12-13 | 2004-06-17 | Sullivan Steven K. | Solid state motor protector |
-
2003
- 2003-12-12 US US10/735,361 patent/US7161779B2/en not_active Expired - Fee Related
Patent Citations (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3673538A (en) * | 1969-12-05 | 1972-06-27 | Texas Instruments Inc | Composite thermistor temperature sensor having step-function response |
US5153805A (en) * | 1988-06-06 | 1992-10-06 | Thermo-O-Disc, Incorporated | Temperature-compensated thermal protector |
US5394288A (en) * | 1991-12-20 | 1995-02-28 | Jeco Company Limited | Actuator |
US6404158B1 (en) | 1992-04-22 | 2002-06-11 | Nartron Corporation | Collision monitoring system |
US20020101210A1 (en) | 1992-04-22 | 2002-08-01 | Nartron Corporation | Collision monitoring system |
US20020121872A1 (en) | 1992-04-22 | 2002-09-05 | Nartron Corporation | Collision monitoring system |
US6548979B2 (en) | 1992-04-22 | 2003-04-15 | Nartron Corporation | Collision monitoring system |
US6462643B1 (en) * | 1998-02-16 | 2002-10-08 | Matsushita Electric Industrial Co., Ltd. | PTC thermistor element and method for producing the same |
US20010048280A1 (en) | 2000-01-04 | 2001-12-06 | Wilson Robert H. | Motor control system for an automatic window of a vehicle |
US20030151382A1 (en) | 2000-08-03 | 2003-08-14 | Daniels Andrew R | Vehicle closure anti-pinch assembly having a non-contact sensor |
US20020143452A1 (en) | 2001-03-30 | 2002-10-03 | Siemens Vdo Automotive Corporation | Automated closure system and method |
US20020190677A1 (en) | 2001-05-25 | 2002-12-19 | Robert Gerbetz | Method for closing a motor driven window |
US20020190680A1 (en) | 2001-06-18 | 2002-12-19 | Gerbetz Robert P. | Method of compensating for abrupt load changes in an anti-pinch window control system |
US20030137265A1 (en) | 2002-01-21 | 2003-07-24 | International Rectifier Corp. | Anti-pinch window drive circuit |
US20040114286A1 (en) * | 2002-12-13 | 2004-06-17 | Sullivan Steven K. | Solid state motor protector |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100039057A1 (en) * | 2008-04-30 | 2010-02-18 | Tsai Kune-Muh | Anti-pinch method and device for controlling an openable and closable body |
Also Published As
Publication number | Publication date |
---|---|
US20050128660A1 (en) | 2005-06-16 |
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AS | Assignment |
Owner name: LEAR CORPORATION, MICHIGAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:DLUGOSZ, ARTUR W.;WROBLESKI, KRZYSZTOF;REEL/FRAME:015566/0062 Effective date: 20040709 |
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Owner name: JPMORGAN CHASE BANK, N.A., AS GENERAL ADMINISTRATI Free format text: SECURITY AGREEMENT;ASSIGNOR:LEAR CORPORATION;REEL/FRAME:017858/0719 Effective date: 20060425 |
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Owner name: JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT Free format text: GRANT OF FIRST LIEN SECURITY INTEREST IN PATENT RIGHTS;ASSIGNOR:LEAR CORPORATION;REEL/FRAME:023519/0267 Effective date: 20091109 Owner name: JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT Free format text: GRANT OF SECOND LIEN SECURITY INTEREST IN PATENT RIGHTS;ASSIGNOR:LEAR CORPORATION;REEL/FRAME:023519/0626 Effective date: 20091109 |
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LAPS | Lapse for failure to pay maintenance fees | ||
STCH | Information on status: patent discontinuation |
Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
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FP | Lapsed due to failure to pay maintenance fee |
Effective date: 20110109 |
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Owner name: LEAR CORPORATION, MICHIGAN Free format text: RELEASE BY SECURED PARTY;ASSIGNOR:JPMORGAN CHASE BANK, N.A.;REEL/FRAME:032722/0553 Effective date: 20100830 |
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Owner name: LEAR CORPORATION, MICHIGAN Free format text: RELEASE BY SECURED PARTY;ASSIGNOR:JPMORGAN CHASE BANK, N.A., AS AGENT;REEL/FRAME:037701/0340 Effective date: 20160104 Owner name: LEAR CORPORATION, MICHIGAN Free format text: RELEASE BY SECURED PARTY;ASSIGNOR:JPMORGAN CHASE BANK, N.A., AS AGENT;REEL/FRAME:037701/0251 Effective date: 20160104 Owner name: LEAR CORPORATION, MICHIGAN Free format text: RELEASE BY SECURED PARTY;ASSIGNOR:JPMORGAN CHASE BANK, N.A., AS AGENT;REEL/FRAME:037701/0180 Effective date: 20160104 |
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Owner name: LEAR CORPORATION, MICHIGAN Free format text: RELEASE BY SECURED PARTY;ASSIGNOR:JPMORGAN CHASE BANK, N.A., AS AGENT;REEL/FRAME:037731/0918 Effective date: 20160104 |